Composition D4/D1 D7/D1
100% Collagen 4.63 ± 0.32* 9.39 ± 0.86**
50% Collagen-50% Elastin 4.70 ± 0.39* 5.53 ± 0.69***
20% Collagen-80%  Elastin 3.68 ± 0.30** 5.24 ± 0.36***
90% Collagen-10% C4S 3.64 ± 0.15** 10.29 ± 0.63*
50% Collagen-50% C4S 3.10 ± 0.19*** 9.15 ± 0.95**
Table 2: Percentage of alamarBlue® reduction of D4 and D7 normalized to values of D1. *, ** and *** indicate statistically significant differences (p<0.05) amongst groups of different compositions.